An ancient Viking runestone hidden in plain view in Stockholm's old town.

Sweden's oldest animated sign is still lighting up the skyline today.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

A plaque marks the house in Stockholm where the French philosopher René Descartes lived up until his death.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

A wooden street sign is the last remnant of this 400-year-old alleyway.

Stockholm's narrowest alley is barely over two feet wide.

One of the world's first dedicated bank buildings in the world is now the oldest one.

A man has revenged his true love's betrayal through tears and stone genitalia.

An 11th-century runestone decorates the halls of Terminal 2 of this Scandinavian travel hub.

In a sleepy village in Oxfordshire, the visionary English writer's gravesite attracts a yearly pilgrimage.

For a century and a half, this great beech stood bearing a carefully carved 20-line poem. Now this stone and plaque are all that remain.

In an isolated field near a dilapidated barn stands this chilling portrayal of the plight of the Nuba peoples of Sudan.

A well for a well, this anachronistically Indian-styled water pit was built in its small town home in gratitude for a similar favor.

The final resting place of a miniature monkey.

Local legend says this unusual chimney is actually a broken-hearted man's tomb.

Each spring this woodland floor is carpeted with purplish flowers as far as the eye can see.

You can climb to the top of the column built to honor the "father of British inland navigation."

"The Most Wonderful Wonder that ever appeared to the Wonder of the British Nation."

This early Norman castle was the first historical monument protected by an act of Parliament.

The eternal resting place of the last highwayman hanged in England.

This sculpture encompasses the emotion of rail travel.

It was once the longest continuously running cinema in the United Kingdom.

An eccentric memorial garden to the "warrior" birds of World War I, the messenger pigeons used by the Allied forces.